
The number (x) in: "1 more than twice a number is 561" is what we are solving here.
In other words, you are looking for a number (x) that if you multiply it by two (same as twice) and then add 1, you get 561.
To solve this, you first write the problem as an algebra equation as follows: 2x + 1 = 561
Then you solve the equation by subtracting 1 from both sides, and then divide both sides by 2. Here is the math to illustrate better:
2x + 1 = 561
2x + 1 - 1 = 561 - 1
2x = 560
2x/2 = 560/2
x = 280
Answer = 280
The answer above is correct, because twice 280 is 560, and 1 more than 560 is in fact 561.
More Than Twice a number
Go here to solve a similar algebra problem.
1 more than twice a number is 562
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